Clinical studyClinical features and natural history of occupational asthma due to western red cedar (Thuja plicata)☆
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Cited by (245)
Evolution of occupational asthma: Does cessation of exposure really improve prognosis?
2014, Respiratory MedicineCitation Excerpt :In fact, the patients who improved were the ones who presented poorer classifications on the GINA at the time of diagnosis, regardless of whether or not they avoided exposure. Delay in diagnosis, the degree of intensity of the symptoms prior to diagnosis and patients' age have been suggested as prognostic factors [7,29–33] that determine the persistence of asthma. In the present study, avoidance of exposure to the causative agent and a lower degree of bronchial obstruction may explain the improvement in symptoms, although the associations were not significant.
Occupational asthma: Review of assessment, treatment, and compensation
2011, ChestCitation Excerpt :Most data regarding occupational asthma have come as a result of studies focused on a specific industry or manufacturing process. For example, as many as 11% of spray painters exposed to diisocyanate-based paints have bronchial hyperreactivity,13 and roughly 5% of workers in the lumber industry exposed to western red cedar dust developed asthma.14 As many as 2.5% of all workers exposed to natural rubber latex15 and up to 20% of bakers or warehouse workers exposed to flour16 have been reported to have occupational asthma; farmers, painters, and cleaners have been reported to have the greatest risk for developing occupational asthma.17
Allergens
2009, Asthma and COPDHistory of occupational asthma in Canada
2023, Canadian Journal of Respiratory, Critical Care, and Sleep MedicineWorkplace interventions for treatment of occupational asthma
2019, Cochrane Database of Systematic ReviewsEnvironmental Causes of Asthma
2018, Seminars in Respiratory and Critical Care Medicine
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This work was supported in part by the Workers' Compensation Board of British Columbia and presented in part at the Annual Meeting of the American Thoracic Society, May 1980. Dr. Lam is a Fellow of the Asthma Foundation of Canada.
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From the Respiratory Division, Department of Medicine, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada.